Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. An apparatus, comprising: a memory; and a processor configured to: regenerate time domain samples of an interfering data numerology from frequency domain received signals; perform pre-fast Fourier transform (FFT) processing of a desired data numerology on the regenerated time domain samples of the interfering data numerology; perform FFT, with a size corresponding to the desired data numerology, on the regenerated time domain samples after performing pre-FFT processing to generate an interfering numerology cancelation signal; and subtract the interfering numerology cancelation signal from a frequency domain received signal of the desired data numerology to reduce an effect of interference of the interfering data numerology on the desired data numerology.
This invention relates to wireless communication systems, specifically addressing interference between different data numerologies in multi-numerology scenarios. The problem arises when signals with different subcarrier spacings (numerologies) coexist in the same frequency band, causing interference that degrades communication performance. The apparatus described here mitigates this interference by regenerating and canceling the interfering signal in the frequency domain. The apparatus includes a memory and a processor that performs several key operations. First, it regenerates time-domain samples of the interfering data numerology from frequency-domain received signals. This involves reconstructing the interfering signal in the time domain to accurately model its impact. Next, the processor applies pre-FFT processing tailored to the desired data numerology on these regenerated time-domain samples. This step ensures compatibility between the interfering and desired signals for subsequent cancellation. The processor then performs an FFT with a size matching the desired numerology on the processed samples, generating an interfering numerology cancelation signal. Finally, this cancelation signal is subtracted from the frequency-domain received signal of the desired numerology, effectively reducing interference and improving signal quality. The approach enables efficient interference suppression in multi-numerology wireless systems.
2. The apparatus of claim 1 , wherein, in regenerating the time domain samples, the processor is further configured to: construct a frequency domain received signal for each of a plurality of symbols of the interfering data numerology that overlaps a symbol of the desired data numerology, the frequency domain signal being constructed by multiplying a frequency domain estimated channel and frequency domain decoded interfering numerology symbols; perform inverse fast Fourier transform (IFFT), with a size corresponding to the interfering data numerology, on reconstructed frequency domain received signals to regenerate a non-cyclic prefix (CP) portion of each of the time domain samples of the interfering data numerology; and perform CP regeneration on output of the IFFT to regenerate a CP portion of each of the time domain samples of the interfering data numerology.
This invention relates to wireless communication systems where multiple numerologies (data transmission configurations) overlap in time and frequency, causing interference. The problem addressed is the need to accurately reconstruct and cancel interfering signals to improve the reception of desired data. The apparatus includes a processor configured to regenerate time domain samples of interfering data by first constructing a frequency domain received signal for each symbol of the interfering numerology that overlaps with a symbol of the desired numerology. This is done by multiplying a frequency domain estimated channel with frequency domain decoded interfering symbols. The processor then performs an inverse fast Fourier transform (IFFT) on the reconstructed frequency domain signals, using an IFFT size matching the interfering numerology, to regenerate the non-cyclic prefix (CP) portion of the time domain samples. Finally, the processor performs CP regeneration on the IFFT output to reconstruct the CP portion of the time domain samples. This allows for precise reconstruction of the interfering signal, enabling effective interference cancellation and improved signal recovery for the desired data. The method ensures accurate alignment and phase coherence between the reconstructed interfering signal and the original received signal, enhancing interference mitigation in overlapping numerology scenarios.
3. The apparatus of claim 2 , wherein each symbol of the interfering data numerology and the desired data numerology is an orthogonal frequency division multiplexing (OFDM) symbol.
This invention relates to wireless communication systems, specifically addressing interference mitigation between signals using different numerologies in orthogonal frequency division multiplexing (OFDM) systems. The problem solved is the interference that occurs when multiple signals with different subcarrier spacings (numerologies) coexist in the same frequency band, degrading communication performance. The apparatus includes a receiver configured to process signals from a communication channel where interfering data and desired data share the same frequency band but have different numerologies. The receiver extracts the desired data by separating it from the interfering data based on their distinct subcarrier spacings. Each symbol of both the interfering and desired data is an OFDM symbol, meaning they use orthogonal subcarriers to transmit data. The apparatus further includes a processor that analyzes the received signal to identify and isolate the desired data symbols from the interfering symbols, leveraging their orthogonal properties to minimize interference. The solution involves synchronizing the receiver to the desired data's numerology and applying filtering or signal processing techniques to suppress interference from the other numerology. This allows reliable extraction of the desired data even in the presence of overlapping signals with different subcarrier spacings. The approach is particularly useful in scenarios like 5G networks where multiple services with different numerologies operate in the same spectrum.
4. The apparatus of claim 2 , wherein, in performing CP regeneration, the processor is further configured to copy last samples of the non-CP portion of each of the time domain samples into the CP portion of each of the time domain samples, where a number of the last samples is equal to a length of the CP portion.
This invention relates to signal processing in wireless communication systems, specifically addressing the challenge of cyclic prefix (CP) regeneration in received signals. The apparatus includes a processor configured to process time domain samples of a received signal, where the signal contains a cyclic prefix (CP) portion and a non-CP portion. During CP regeneration, the processor copies the last samples of the non-CP portion of each time domain sample into the CP portion of the same sample. The number of samples copied is equal to the length of the CP portion. This ensures that the CP portion accurately reflects the end of the non-CP portion, which is critical for maintaining signal integrity in orthogonal frequency-division multiplexing (OFDM) systems. The apparatus may also include a receiver to obtain the time domain samples and a transmitter to output the processed samples. The CP regeneration process helps mitigate inter-symbol interference and improves synchronization in communication systems. The invention is particularly useful in scenarios where CP corruption or loss occurs during transmission, ensuring reliable signal reconstruction.
5. The apparatus of claim 2 , wherein, in performing CP regeneration, the processor is further configured to: copy last samples of the non-CP portion of each of the time domain samples into the CP portion of each of the time domain samples, leaving a blank portion in the CP portion; perform an overlap-add method for each of the time domain samples by: multiplying a first portion of a current time domain sample with a first window to obtain a first result; multiplying a second portion of a previous time domain sample with a second window to obtain a second result; and adding the first result and the second result for application to fill in the blank portion of the CP portion.
This invention relates to cyclic prefix (CP) regeneration in time-domain signal processing, particularly for applications in wireless communication systems where signal integrity is critical. The problem addressed is the degradation of signal quality due to imperfect CP handling, which can lead to inter-symbol interference and reduced performance in orthogonal frequency-division multiplexing (OFDM) systems. The apparatus includes a processor configured to regenerate the CP by copying the last samples of the non-CP portion of each time-domain sample into the CP portion, leaving a blank section. To fill this blank section, an overlap-add method is employed. The processor multiplies a first portion of the current time-domain sample with a first window to obtain a first result and multiplies a second portion of the previous time-domain sample with a second window to obtain a second result. These results are then added together to fill the blank portion of the CP. This approach ensures smooth transitions between adjacent time-domain samples, minimizing distortion and improving signal quality. The method is particularly useful in scenarios where CP regeneration is required to maintain synchronization and reduce interference in communication systems.
6. The apparatus of claim 5 , wherein the first window is a rising window and the second window is a falling window.
This invention relates to signal processing systems, specifically apparatuses for analyzing signals using windowing techniques to improve detection or measurement accuracy. The problem addressed is the need to distinguish between rising and falling signal components, which conventional fixed-window methods struggle to resolve accurately. The apparatus includes a signal input module that receives an input signal, a windowing module that applies two distinct windows to the signal, and an analysis module that processes the windowed signals. The first window is a rising window, which emphasizes the increasing portions of the signal, while the second window is a falling window, which emphasizes the decreasing portions. These windows are applied simultaneously or sequentially to the same input signal. The analysis module then compares or combines the results from both windows to extract features or characteristics that would be obscured by a single, uniform window. This dual-window approach enhances the ability to detect transitions, peaks, or other critical signal features by isolating rising and falling components separately. The apparatus may further include a filtering module to preprocess the signal before windowing or a post-processing module to refine the output based on the windowed analysis. The invention is particularly useful in applications requiring precise signal differentiation, such as communications, biomedical signal analysis, or industrial monitoring.
7. The apparatus of claim 2 , wherein the processor is further configured to concatenate the regenerated time domain samples for the whole overlapping OFMD symbols.
The invention relates to signal processing in orthogonal frequency-division multiplexing (OFDM) systems, specifically addressing the challenge of efficiently reconstructing time-domain signals from frequency-domain data. OFDM is widely used in wireless communications, but processing overlapping OFDM symbols can introduce complexity in signal regeneration. The apparatus includes a processor configured to regenerate time-domain samples from frequency-domain data for overlapping OFDM symbols. The processor further concatenates these regenerated time-domain samples to form a continuous signal representing the entire overlapping OFDM symbols. This concatenation step ensures seamless reconstruction of the time-domain signal, which is critical for maintaining signal integrity in communication systems. The apparatus may also include a memory for storing the frequency-domain data and a transmitter for outputting the concatenated time-domain signal. The invention improves signal processing efficiency by handling overlapping symbols in a structured manner, reducing computational overhead and ensuring accurate signal reconstruction. This is particularly useful in high-speed data transmission applications where overlapping symbols are common.
8. The apparatus of claim 1 , further comprising performing pre-FFT processing and removing first samples of a size equal to a CP length of the desired data numerology from the whole time domain samples of concatenated regenerated time domain samples prior to performing desired data FFT.
This invention relates to wireless communication systems, specifically to signal processing techniques for handling concatenated time-domain samples in a receiver. The problem addressed is the need to accurately process and decode data signals with different numerologies (subcarrier spacings) in a concatenated time-domain signal, particularly when the signal includes cyclic prefix (CP) samples that must be removed before performing a fast Fourier transform (FFT) on the desired data. The apparatus includes a receiver configured to process concatenated time-domain samples, where the samples are generated from multiple signals with different numerologies. The apparatus performs pre-FFT processing on the concatenated samples, which involves removing a portion of the samples at the beginning of the signal. The removed portion corresponds to the cyclic prefix length of the desired data numerology. This ensures that only the relevant data portion of the signal is retained for further processing. After removing the first samples, the remaining time-domain samples are then subjected to an FFT operation to extract the desired data. This technique allows for efficient and accurate decoding of signals with varying numerologies in a concatenated time-domain signal, improving signal processing performance in wireless communication systems.
9. The apparatus of claim 1 , wherein one example of the interfering numerology is a synchronization signal/physical broadcast channel (PBCH) block, and one example of the desired numerology comprises physical downlink shared channel (PDSCH) data.
This invention relates to wireless communication systems, specifically addressing interference between different numerologies in a shared frequency band. The problem arises when signals with different subcarrier spacings (numerologies) overlap in time and frequency, causing interference that degrades performance. For example, synchronization signals and broadcast channels (SS/PBCH blocks) may interfere with downlink data transmissions (PDSCH) when they share the same frequency resources. The apparatus includes a receiver configured to detect and process signals with different numerologies. It identifies interfering signals, such as SS/PBCH blocks, and desired signals, such as PDSCH data, to mitigate interference. The apparatus may use techniques like interference cancellation, signal separation, or adaptive filtering to improve the reception of the desired signal while suppressing the interfering signal. The system dynamically adjusts processing parameters based on the detected numerologies to optimize performance in mixed-numerology scenarios. The invention is particularly useful in 5G and beyond networks where multiple numerologies coexist, ensuring reliable communication despite overlapping signals. By distinguishing and managing interference between different numerologies, the apparatus enhances data throughput, reduces errors, and improves overall system efficiency.
10. The apparatus of claim 1 , wherein the communication system is a 5 th Generation (5G) New Radio (NR) communication system.
A communication apparatus is designed for use in a 5G New Radio (NR) communication system, addressing the need for efficient and reliable wireless connectivity in next-generation networks. The apparatus includes a transceiver configured to transmit and receive signals over a wireless channel, with support for advanced features such as beamforming, massive MIMO, and ultra-low latency communication. It also incorporates a processing unit that manages signal processing tasks, including modulation, demodulation, encoding, and decoding, to ensure high data throughput and low error rates. The apparatus further includes a control unit that handles resource allocation, interference management, and network coordination, optimizing performance in dense and heterogeneous network environments. Additionally, the apparatus supports dual connectivity, allowing seamless handover between different network nodes while maintaining service continuity. The design ensures compatibility with 5G NR standards, enabling high-speed data transmission, enhanced mobility, and support for diverse use cases, including IoT, mobile broadband, and mission-critical applications. The apparatus is optimized for both sub-6 GHz and mmWave frequency bands, providing flexibility in deployment scenarios. Overall, the invention enhances network efficiency, capacity, and reliability in 5G NR communication systems.
11. The apparatus of claim 1 , further comprising decoding each symbol of the interfering data numerology prior to regenerating the time domain samples.
This invention relates to wireless communication systems, specifically to apparatuses for handling interfering data signals with different numerologies. The problem addressed is the interference caused by signals using different subcarrier spacings (numerologies) in the same frequency band, which can degrade communication performance. The apparatus includes a receiver configured to obtain a received signal containing both a desired signal and an interfering signal with a different numerology. The apparatus further includes a processor that regenerates time-domain samples of the interfering signal by first decoding each symbol of the interfering data numerology. This decoding step ensures accurate reconstruction of the interfering signal before it is subtracted from the received signal to isolate the desired signal. The apparatus may also include a transmitter for sending the processed signal. The invention improves signal separation and reduces interference in multi-numerology wireless environments, such as those used in 5G and beyond networks. The solution is particularly useful in scenarios where multiple services or devices operate in overlapping frequency bands with different subcarrier spacings.
12. The apparatus of claim 1 , wherein an orthogonal frequency division multiplexing (OFDM) signal of the interfering data numerology and an OFDM signal of the desired data numerology have different subcarrier spacings and different OFDM symbol durations.
This invention relates to wireless communication systems, specifically addressing interference mitigation between signals with different numerologies in orthogonal frequency division multiplexing (OFDM) systems. The problem solved is the coexistence of multiple OFDM signals with varying subcarrier spacings and symbol durations, which can lead to inter-carrier interference (ICI) and other performance degradation. The apparatus includes a transmitter and receiver configured to handle signals with distinct numerologies. The interfering data numerology and the desired data numerology use OFDM signals with different subcarrier spacings and different OFDM symbol durations. This allows flexible deployment of multiple services or users with different requirements, such as varying bandwidths or latency constraints, within the same frequency band. The system ensures that the signals can coexist without significant interference, maintaining reliable communication. The apparatus may further include components for signal processing, such as filters or synchronization mechanisms, to manage the interaction between the different numerologies. The design enables efficient spectrum utilization while mitigating interference, making it suitable for advanced wireless networks like 5G and beyond.
13. A method comprising: regenerating, by a processor of a receiving apparatus, time domain samples of interfering data numerology from frequency domain received signals; performing, by the processor, pre-fast Fourier transform (FFT) processing of a desired data numerology on the regenerated time domain samples of the interfering data numerology; performing, by the processor, FFT, with a size corresponding to the desired data numerology, on the regenerated time domain samples after performing pre-FFT processing to generate an interfering numerology cancelation signal; and subtracting, by the processor, the interfering numerology cancelation signal from a frequency domain received signal of the desired data numerology to reduce an effect of interference of the interfering data numerology on the desired data numerology.
This invention relates to wireless communication systems where multiple numerologies (subcarrier spacings) coexist, causing interference between signals. The problem addressed is the interference from one numerology (interfering data numerology) degrading the reception of another numerology (desired data numerology). The method involves a receiving apparatus processing received signals to mitigate interference. First, the processor regenerates time-domain samples of the interfering data numerology from frequency-domain received signals. This involves reconstructing the interfering signal in the time domain. Next, the processor applies pre-FFT processing (such as filtering or windowing) to these regenerated time-domain samples, tailored to the desired data numerology. The processor then performs an FFT operation on the processed samples, using an FFT size matching the desired data numerology, to generate an interfering numerology cancelation signal. Finally, this cancelation signal is subtracted from the frequency-domain received signal of the desired data numerology, effectively reducing interference from the interfering numerology. This approach allows for dynamic interference cancellation in systems with mixed numerologies, improving signal quality and reliability for the desired data transmission.
14. The method of claim 13 , wherein regenerating the time domain samples comprises: constructing a frequency domain received signal for each of a plurality of symbols of the interfering data numerology that overlaps a symbol of the desired data numerology, the frequency domain signal being constructed by multiplying a frequency domain estimated channel and frequency domain decoded interfering numerology symbols; performing inverse fast Fourier transform (IFFT), with a size corresponding to the interfering data numerology, on reconstructed frequency domain received signals to regenerate a non-cyclic prefix (CP) portion of each of the time domain samples of the interfering data numerology; and performing CP regeneration on output of the IFFT to regenerate a CP portion of each of the time domain samples of the interfering data numerology.
This invention relates to wireless communication systems, specifically addressing interference cancellation in scenarios where multiple numerologies (data transmission configurations) overlap in time and frequency. The problem solved involves accurately reconstructing interfering signals to enable effective cancellation, particularly when different numerologies share the same time-frequency resources. The method reconstructs time domain samples of interfering data by first constructing a frequency domain representation of the interfering signal for each overlapping symbol. This is done by multiplying a frequency domain estimated channel with frequency domain decoded symbols of the interfering numerology. The reconstructed frequency domain signals are then converted back to the time domain using an inverse fast Fourier transform (IFFT) with a size matching the interfering data numerology, regenerating the non-cyclic prefix (CP) portion of the time domain samples. Finally, the cyclic prefix portion is regenerated by processing the IFFT output, ensuring the full time domain signal of the interfering data is accurately reconstructed for cancellation. This approach improves interference mitigation in multi-numerology wireless systems by precisely reconstructing interfering signals for removal from the desired data stream.
15. The method of claim 14 , wherein each symbol of the interfering data numerology and the desired data numerology is an orthogonal frequency division multiplexing (OFDM) symbol.
This invention relates to wireless communication systems, specifically addressing interference mitigation between signals using different numerologies in orthogonal frequency division multiplexing (OFDM) systems. The problem arises when multiple signals with varying subcarrier spacings or symbol durations coexist in the same frequency band, causing inter-symbol interference (ISI) and inter-carrier interference (ICI). The invention provides a method to process and separate these signals by aligning and demodulating symbols from both interfering and desired data streams, where each symbol is an OFDM symbol. The method involves detecting and extracting symbols from the interfering data stream, which has a different numerology (subcarrier spacing or symbol duration) than the desired data stream. By processing these symbols, the interference is mitigated, allowing accurate recovery of the desired data. The technique ensures compatibility between signals with different numerologies, improving spectral efficiency and reducing interference in multi-user or multi-service wireless environments. The approach is particularly useful in 5G and beyond networks where flexible numerology is employed to support diverse services.
16. The method of claim 14 , wherein performing CP regeneration comprises copying last samples of the non-CP portion of each of the time domain samples into the CP portion of each of the time domain samples, where a number of the last samples is equal to a length of the CP portion.
This invention relates to wireless communication systems, specifically to techniques for cyclic prefix (CP) regeneration in received signals. The problem addressed is the degradation of signal quality due to imperfect or missing cyclic prefixes in orthogonal frequency-division multiplexing (OFDM) systems, which can lead to inter-symbol interference and reduced performance. The method involves regenerating the CP portion of time-domain samples in a received signal. The process begins by identifying the non-CP portion of each time-domain sample, which contains the actual data symbols. The last samples of this non-CP portion are then copied into the CP portion of the same time-domain sample. The number of samples copied corresponds exactly to the length of the CP portion, ensuring proper alignment and continuity of the signal. This regeneration technique helps restore the original signal structure, mitigating errors caused by CP corruption or loss during transmission. The method is particularly useful in scenarios where the CP is damaged due to channel impairments or synchronization errors. By reconstructing the CP from the non-CP data, the system can improve OFDM demodulation accuracy and overall communication reliability. The technique is applicable to various wireless standards, including 5G and Wi-Fi, where OFDM is widely used. The approach is computationally efficient, requiring only a simple copy operation, making it suitable for real-time processing in communication devices.
17. The method of claim 14 , wherein performing CP regeneration comprises: copying last samples of the non-CP portion of each of the time domain samples into the CP portion of each of the time domain samples, leaving a blank portion in the CP portion; and performing an overlap-add method for each of the time domain samples by: multiplying a first portion of a current time domain sample with a first window to obtain a first result; multiplying a second portion of a previous time domain sample with a second window to obtain a second result; and adding the first result and second result for application to fill in the blank portion of the CP portion.
This invention relates to cyclic prefix (CP) regeneration in time-domain signal processing, particularly for applications in wireless communication systems where CP regeneration is needed to reconstruct or modify signals. The problem addressed is the need for efficient and accurate CP regeneration to maintain signal integrity and reduce interference in communication systems. The method involves regenerating the CP portion of time-domain samples by copying the last samples of the non-CP portion into the CP portion, creating a blank section in the CP. To fill this blank portion, an overlap-add method is applied. This method involves multiplying a first portion of the current time-domain sample with a first window to produce a first result and multiplying a second portion of the previous time-domain sample with a second window to produce a second result. The first and second results are then added together to fill the blank portion of the CP. This approach ensures smooth transitions between adjacent time-domain samples, reducing discontinuities and improving signal quality. The technique is particularly useful in scenarios where CP regeneration is required for signal reconstruction, interference mitigation, or signal processing in communication systems.
18. The method of claim 17 , wherein the first window is a rising window and the second window is a falling window.
This invention relates to signal processing techniques for analyzing time-domain signals, particularly for detecting and characterizing transient events or features within a signal. The method addresses the challenge of accurately identifying and measuring signal variations that occur over short time intervals, which can be difficult to resolve using conventional fixed-window analysis techniques. The method involves applying a first window function to a signal to isolate a rising portion of a transient event, followed by applying a second window function to isolate a falling portion of the same event. The first window, referred to as a rising window, is designed to emphasize the increasing amplitude of the signal during the onset of the transient. The second window, referred to as a falling window, is designed to emphasize the decreasing amplitude of the signal during the decay of the transient. By separately analyzing these two portions, the method improves the resolution and accuracy of transient detection compared to single-window approaches. The method may further include processing the windowed signal portions to extract features, such as peak amplitude, duration, or timing, which can be used for further analysis or decision-making. The window functions can be tailored to the specific characteristics of the signal and the nature of the transient events being analyzed. This approach is applicable in various fields, including communications, radar, sonar, and biomedical signal processing, where precise detection of transient events is critical.
19. The method of claim 14 , wherein concatenating the regenerated time domain samples for the whole overlapping OFDM symbols.
This invention relates to signal processing in orthogonal frequency-division multiplexing (OFDM) systems, specifically addressing the challenge of efficiently reconstructing time-domain signals from frequency-domain data. The method involves regenerating time-domain samples for overlapping OFDM symbols and concatenating these samples to form a continuous time-domain signal. The process begins by converting frequency-domain data into time-domain samples using an inverse fast Fourier transform (IFFT). These samples are then windowed to reduce spectral leakage and interference between adjacent symbols. The windowed samples are overlapped and added to ensure smooth transitions between consecutive OFDM symbols, mitigating inter-symbol interference (ISI). The concatenated time-domain samples are then processed to form the final output signal. This technique improves signal integrity and spectral efficiency in OFDM-based communication systems by minimizing distortion and interference during symbol transitions. The method is particularly useful in wireless communication systems, digital broadcasting, and other applications requiring high spectral efficiency and low error rates.
20. The method of claim 13 , further comprising performing pre-FFT processing and removing first samples of a size equal to a CP length of the desired data numerology from the whole time domain samples of concatenated regenerated time domain samples prior to performing desired data FFT.
This invention relates to signal processing in wireless communication systems, specifically improving the accuracy of data extraction from received signals by refining time-domain sample handling before Fast Fourier Transform (FFT) processing. The problem addressed is the presence of unwanted samples, particularly cyclic prefix (CP) samples, which can distort data extraction when concatenated time-domain signals are processed. The method involves regenerating time-domain samples from received signals and performing pre-FFT processing to remove initial samples equal in length to the CP of the desired data numerology. This ensures that only valid data samples are retained before applying the FFT, enhancing signal integrity and reducing interference. The technique is particularly useful in orthogonal frequency-division multiplexing (OFDM) systems where precise timing and synchronization are critical for accurate data demodulation. By removing the CP samples before FFT, the method mitigates timing errors and improves the reliability of extracted data. The approach is applicable to both uplink and downlink communications in wireless networks, ensuring robust performance in diverse signal conditions.
21. The method of claim 13 , wherein one example of the interfering numerology is a synchronization signal/physical broadcast channel (PBCH) block, and one example of the desired numerology comprises physical downlink shared channel (PDSCH) data.
This method outlines a technique for a receiving apparatus to cancel interference, particularly useful in mixed numerology communication systems. A processor first recreates time-domain samples of an interfering data signal from its frequency-domain representation. It then applies a specific pre-Fast Fourier Transform (FFT) processing step, tailored for the desired data signal, to these recreated interfering time-domain samples. An FFT is subsequently performed on these processed samples, using a size appropriate for the desired data numerology, to generate a dedicated interference cancellation signal. This cancellation signal is then subtracted from the frequency-domain received signal of the desired data to significantly reduce the impact of the interference. A common application of this method is when the interfering data is a Synchronization Signal/Physical Broadcast Channel (PBCH) block and the desired data is Physical Downlink Shared Channel (PDSCH) data. ERROR (embedding): Error: Failed to save embedding: Could not find the 'embedding' column of 'patent_claims' in the schema cache
22. The method of claim 13 , wherein the communication system is a 5th Generation (5G) New Radio (NR) communication system.
A method for optimizing communication in a 5th Generation (5G) New Radio (NR) communication system involves managing network resources to enhance efficiency and performance. The method includes dynamically allocating radio resources based on real-time network conditions, such as traffic load, user device capabilities, and channel quality. It also involves implementing advanced techniques like beamforming and massive MIMO to improve signal strength and reduce interference. Additionally, the method supports ultra-reliable low-latency communication (URLLC) by prioritizing critical data transmissions and adjusting scheduling algorithms to meet stringent latency requirements. The system may also incorporate machine learning to predict network demands and preemptively allocate resources. By integrating these features, the method ensures high-speed, reliable, and efficient data transmission in 5G NR networks, addressing challenges related to increasing data demands and diverse service requirements. The approach enhances overall network performance while maintaining compatibility with existing 5G infrastructure.
23. The method of claim 13 , further comprising decoding each symbol of the interfering data numerology prior to regenerating the time domain samples.
This invention relates to wireless communication systems, specifically methods for handling interfering data signals with different numerologies. The problem addressed is the interference caused by multiple signals using different subcarrier spacings (numerologies) in the same frequency band, which can degrade communication performance. The invention provides a technique to mitigate this interference by decoding interfering data symbols before regenerating time-domain samples for cancellation. The method involves receiving a composite signal containing both desired and interfering data, where the interfering data uses a different numerology than the desired signal. The interfering data is first decoded to extract its symbols. Each symbol of the interfering data is then decoded individually. After decoding, the time-domain samples of the interfering data are regenerated based on the decoded symbols. These regenerated samples are then used to cancel the interference from the composite signal, improving the accuracy of the desired signal's detection. The technique ensures that the interfering signal's structure is accurately reconstructed in the time domain, allowing for effective interference cancellation. This approach is particularly useful in scenarios where multiple numerologies coexist, such as in 5G networks with mixed numerology deployments.
24. The method of claim 13 , wherein an orthogonal frequency division multiplexing (OFDM) signal of the interfering data numerology and an OFDM signal of the desired data numerology have different subcarrier spacings and different OFDM symbol durations.
This invention relates to wireless communication systems, specifically addressing interference mitigation between signals with different numerologies in orthogonal frequency division multiplexing (OFDM) systems. The problem arises when multiple signals with varying subcarrier spacings and OFDM symbol durations coexist in the same frequency band, leading to inter-carrier interference (ICI) and performance degradation. The invention describes a method to handle interference between an OFDM signal carrying desired data and another OFDM signal carrying interfering data, where both signals have distinct numerologies. The key feature is that the interfering signal and the desired signal operate with different subcarrier spacings and different OFDM symbol durations. This difference in numerologies allows the system to distinguish and mitigate interference by leveraging the orthogonal properties of OFDM subcarriers when their spacings and symbol durations are mismatched. The method may involve techniques such as adaptive filtering, interference cancellation, or dynamic resource allocation to minimize the impact of the interfering signal on the desired signal. By ensuring that the two signals have non-overlapping or minimally overlapping subcarrier allocations, the system can reduce interference and improve overall communication reliability. This approach is particularly useful in scenarios like 5G New Radio (NR) where multiple services with different numerologies share the same spectrum.
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October 29, 2019
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